Process for making high solids fabric softeners using low amounts of solvents and no side reactions
US5223628A · kind A · utility
21Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Nov 7, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for making substantially solvent free quaternary ammonium compounds using fatty acids, amines and quaternizing agents without side reactions that would produce esters of fatty acids. A relatively small amount of a water-alcohol solvent is used in the quaternizing reaction after which a fatty acid is added and the solvent removed by sparging and/or vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.